Silo.



JAMES P. CHRISTENSEN,

PATENT OFFICE.

OF VINLAND, WISCONSIN.

SPECIFICATION forming .part of Letters Patent No. 721,543, datedFebruary 24, 1903.

v Application filed August 274, 1902. Serial No. ]21,241I.` (No modell)To @ZZ whom/ zt/may concern.'

Be it known that I, JAMES P. CHRIs'rENsEN, a citizen of the UnitedStates,residing aty the town of Viriland,gin the county of Winnebago andState'of Wisconsin, have invented new and useful Improvements in Silos,of I which the followingis a specification.

My invention relates to a silo or tank and to a new and novel methodofconstruction, so that brick or any other indestructible material may beused for the wall.

The objects ofmy invention are, first, to

provide an improved means of `binding the wall; second,to provide ameans of binding the doors tightly and to render them easily removable;third, to'provide a means of ventilating the walls and to preventfreezing of the contents of the silo.

In the accompanying drawings, Figure l represents a viewin lsideelevation of a silo embodying the features of the present invention.Fig. 2 represents a vertical section of the double wall. Fig 3represents a horizontal section on'the plane of one series oftie-plates, parts being broken away to disclose the two walls of thestructure. Fig. 4 represents an enlarged detail perspective view of oneof the tie-plates, and Fig. 5 represents a vertical section of one oftheztieplates. y

A represents acircular wall of the silo, provided at one side withadoorway or opening A', extending from top to bottom.

B is the roof, and C an opening through' which the silo may be filledafter all doors are closed.

DD D, dac., represent doors.

E represents a circular plate provided with one or more grooves e e andcrimped upon the inner edge e'. The plate E is preferably constructed insections and lapped at the ends E', as shown, Fig. 3., The sections maybe first cut straight and then crimped by any mechanical means upon oneedge, orfthey may be cast in the form shown. Itis obvious that thesetie-plates may be constructed of straight sheets of metal and simplycrimpedY to secure the curve or cast without a groove; but I regard theaddition and the use of one or more grooves e e as an improvement andmore beneficial in insuring the stability and rigidity of the plates andin binding thesilowall. It will be understood that where the vplat'esareboth grooved and crimped and permitted to lap each other at the joints amaximum of rigidity and security is attained.

The plates E, &c., arelaid horizontally between the coursings of brickconstituting the wall at certain intervals in' building the wall and aretiedacross the doorway A by means of rods F F F, duc., passing througheyes in the upturned ends of the plates y"y f yand the metallic,door-jambs G G and being secured by nuts g gand grg. @The plates andnuts g g are embedded in the masonry as the silowall is built. The.doors D D D, duc., are dropped down from above inside the jambs G G andattached to the respective rods F F F, &c. by one or more hooks J, whichare tightened by means of nutsj. The doors are constructed ofmatchedmaterial, and one or more bolts K pass through each door, with nuts uponeachV end to tighten the joints in case of shrinkage, and a hook L isprovided at one end by extension of the bolt to proremoval, either tothe rod F or to some other support. I have found by experience thatmetallic door-jambe G vG are preferable to wooden door-jamb's with ametallic border or binding. I therefore.; construct the doorjambs G Gwith rectangular offsets G G and G2 G2,"which are embedded around theends ofthe tie-plates E E into the wall as it is laid up, These jam bsmay be constructed of thin materialfand the inner edges G3 G3 allowed'to project sufficiently to engage the doors D D D, dac., and form atight yjoint as the doors are clamped to the jamb by means of thev hooksJ. l

In silos itis necessary that the construction. be such as to preventfreezing. The walls are therefore preferably constructed double,with anair-space between the two sections, and tied across in the usual mannerof double-wall construction. In my invention I providea means ofventilation between the two walls. O O in' Fig. l represent openings atthe bottom through the outer wall leading into the central space betweenthe two walls, and P represents a Ventilating-chimney at the top. I alsoprovide a vertical partition R vide a means of hanging up thedoorafterICO at the rear and horizontal partial divisions of the inner spaceleading thereto, as shown in Fig. 2. The object of this is to create aconstant upward circulation of the air around the inner space from thebottom to the top of the silo, as indicated by the arrows. In coldweather when desiring to stop the circulation and create a dead-airspacel I provide dampers S S S, &c., closing openings between thehorizontally-extending flues and capable of being operated from theoutside of the silo. Then by closing the openings O O at the bottom I amenabled to provide an absolutely dead-air space to prevent freezing. Ido not regard dampers S S S, &c., as a necessary feature `of myinvention; but they are of advantage in closing o portions of thesilo-wall as the contents are used down from the top. The essentialfeature of my Ventilating system is a sinuonsly-extending iiue on each iside leading from a lower opening at the side of the door upwardly tothe chimney P at the rear.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. A silo comprising a masonry-wall, tieplates arranged at intervalstherein, the said tie plates having transverse corrugations along theirinner edges, substantially as described.

2. A silo comprising a circular wall-closure of brick or other masonry,a series of tiel plates corrugated on their inner edges so as togivethem a circular shape, the corrugations also serving to furtherstrengthen and hold the masonry in position, substantially as described.

3. A silo comprising a masonry-wall, tieplates arranged at intervalstherein, the said tie-plates having longitudinal grooves or corrugationsformed along one edge, and transverse corrugations along Vtheir otheredges, substantially as described.

4:. A silo comprising a wall-closure cylindrical in shape, a series ofcircular tie-plates incorporated therein and formed with upturned endflanges, the said wall being formed with a doorway on one side,tie-bolts extending across the doorway and connecting the upturned endsof the said plates for thoroughly bracing them at this point,substantially as described.

5. A silo formed of a cylindrical wall having an opening at one side,tie-plates incorporated in the wall, tie-rods connecting the ends of thetie-plates across said opening, and doors for closing the said openingtogether with means for fastening the said doors to the tie-rods,substantially as described.

6. A silo formed with a cylindrical wall provided with a doorway at oneside, a door-jamb arranged therein, tie-plates in the wall having theirends adjacent to the door-jamb, rods connecting the ends of thetie-plates and extending through the jamb, doors applied to the inneredges of the door-jamb, and hooked bolts for connecting the doors withthe tierods and tightly clamping the doors against the door-jamb,substantially as described.

7. A silo formed with a cylindrical wall, having a central air-spacebuilt therein, partitions in said air-space forming a series ofbaffle-plates for directing ventilation within the wall-space, the saidventilation, substantially as described.

8. A silo formed of a cylindrical wall provided with an air-spacetherein, the silo having a door extending from the top to bottom in oneside, a partition in the air-space opposite the door, horizontalpartitions arranged in the air-space but formed with openings leadingfrom the space between one set of partitions to the next adjacent space,air-inlets near the bottom of the silo, and an airoutlet at the topthereof, substantially as described.

9. A silo comprising a cylindrical wall, tieplates mounted at intervalstherein comprising a series of segmental corrugated plates having theirends lapped and riveted together the said platesstrengthening thesilo-wall, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JAMES P. CHRISTENSEN.

Witnesses:

ANNA R. WATERHoUsE, MARIA MoOoRMIcK.

and dampers for controlling

